Mercurial > sdl-ios-xcode
view src/video/win32/SDL_win32modes.c @ 5004:0c72ae7b7cb2
Added native atomic operations for Windows, Mac OS X, and gcc compiler intrinsics.
Changed the CAS return value to bool, so it's efficient with OSAtomicCompareAndSwap32Barrier()
Added an atomic test adapted from code by Michael Davidsaver
author | Sam Lantinga <slouken@libsdl.org> |
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date | Sun, 16 Jan 2011 15:16:39 -0800 |
parents | e1664f94f026 |
children |
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/* SDL - Simple DirectMedia Layer Copyright (C) 1997-2010 Sam Lantinga This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA Sam Lantinga slouken@libsdl.org */ #include "SDL_config.h" #include "SDL_win32video.h" static SDL_bool WIN_GetDisplayMode(LPCTSTR deviceName, DWORD index, SDL_DisplayMode * mode) { SDL_DisplayModeData *data; DEVMODE devmode; HDC hdc; devmode.dmSize = sizeof(devmode); devmode.dmDriverExtra = 0; if (!EnumDisplaySettings(deviceName, index, &devmode)) { return SDL_FALSE; } data = (SDL_DisplayModeData *) SDL_malloc(sizeof(*data)); if (!data) { return SDL_FALSE; } data->DeviceMode = devmode; data->DeviceMode.dmFields = (DM_BITSPERPEL | DM_PELSWIDTH | DM_PELSHEIGHT | DM_DISPLAYFREQUENCY | DM_DISPLAYFLAGS); /* Fill in the mode information */ mode->format = SDL_PIXELFORMAT_UNKNOWN; mode->w = devmode.dmPelsWidth; mode->h = devmode.dmPelsHeight; mode->refresh_rate = devmode.dmDisplayFrequency; mode->driverdata = data; #ifdef _WIN32_WCE /* In WinCE EnumDisplaySettings(ENUM_CURRENT_SETTINGS) doesn't take the user defined orientation into account but GetSystemMetrics does. */ if (index == ENUM_CURRENT_SETTINGS) { mode->w = GetSystemMetrics(SM_CXSCREEN); mode->h = GetSystemMetrics(SM_CYSCREEN); } #endif /* WinCE has no GetDIBits, therefore we can't use it to get the display format */ #ifndef _WIN32_WCE if (index == ENUM_CURRENT_SETTINGS && (hdc = CreateDC(deviceName, NULL, NULL, NULL)) != NULL) { char bmi_data[sizeof(BITMAPINFOHEADER) + 256 * sizeof(RGBQUAD)]; LPBITMAPINFO bmi; HBITMAP hbm; SDL_zero(bmi_data); bmi = (LPBITMAPINFO) bmi_data; bmi->bmiHeader.biSize = sizeof(BITMAPINFOHEADER); hbm = CreateCompatibleBitmap(hdc, 1, 1); GetDIBits(hdc, hbm, 0, 1, NULL, bmi, DIB_RGB_COLORS); GetDIBits(hdc, hbm, 0, 1, NULL, bmi, DIB_RGB_COLORS); DeleteObject(hbm); DeleteDC(hdc); if (bmi->bmiHeader.biCompression == BI_BITFIELDS) { switch (*(Uint32 *) bmi->bmiColors) { case 0x00FF0000: mode->format = SDL_PIXELFORMAT_RGB888; break; case 0x000000FF: mode->format = SDL_PIXELFORMAT_BGR888; break; case 0xF800: mode->format = SDL_PIXELFORMAT_RGB565; break; case 0x7C00: mode->format = SDL_PIXELFORMAT_RGB555; break; } } else if (bmi->bmiHeader.biBitCount == 8) { mode->format = SDL_PIXELFORMAT_INDEX8; } else if (bmi->bmiHeader.biBitCount == 4) { mode->format = SDL_PIXELFORMAT_INDEX4LSB; } } else #endif /* _WIN32_WCE */ { /* FIXME: Can we tell what this will be? */ if ((devmode.dmFields & DM_BITSPERPEL) == DM_BITSPERPEL) { switch (devmode.dmBitsPerPel) { case 32: mode->format = SDL_PIXELFORMAT_RGB888; break; case 24: mode->format = SDL_PIXELFORMAT_RGB24; break; case 16: mode->format = SDL_PIXELFORMAT_RGB565; break; case 15: mode->format = SDL_PIXELFORMAT_RGB555; break; case 8: mode->format = SDL_PIXELFORMAT_INDEX8; break; case 4: mode->format = SDL_PIXELFORMAT_INDEX4LSB; break; } } } return SDL_TRUE; } static SDL_bool WIN_AddDisplay(LPTSTR DeviceName) { SDL_VideoDisplay display; SDL_DisplayData *displaydata; SDL_DisplayMode mode; #ifdef DEBUG_MODES printf("Display: %s\n", WIN_StringToUTF8(DeviceName)); #endif if (!WIN_GetDisplayMode(DeviceName, ENUM_CURRENT_SETTINGS, &mode)) { return SDL_FALSE; } displaydata = (SDL_DisplayData *) SDL_malloc(sizeof(*displaydata)); if (!displaydata) { return SDL_FALSE; } SDL_memcpy(displaydata->DeviceName, DeviceName, sizeof(displaydata->DeviceName)); SDL_zero(display); display.desktop_mode = mode; display.current_mode = mode; display.driverdata = displaydata; SDL_AddVideoDisplay(&display); return SDL_TRUE; } int WIN_InitModes(_THIS) { DWORD i, j, count; DISPLAY_DEVICE device; device.cb = sizeof(device); for (i = 0;; ++i) { TCHAR DeviceName[32]; if (!EnumDisplayDevices(NULL, i, &device, 0)) { break; } if (!(device.StateFlags & DISPLAY_DEVICE_ATTACHED_TO_DESKTOP)) { continue; } SDL_memcpy(DeviceName, device.DeviceName, sizeof(DeviceName)); #ifdef DEBUG_MODES printf("Device: %s\n", WIN_StringToUTF8(DeviceName)); #endif count = 0; for (j = 0;; ++j) { if (!EnumDisplayDevices(DeviceName, j, &device, 0)) { break; } if (!(device.StateFlags & DISPLAY_DEVICE_ATTACHED_TO_DESKTOP)) { continue; } count += WIN_AddDisplay(device.DeviceName); } if (count == 0) { WIN_AddDisplay(DeviceName); } } if (_this->num_displays == 0) { SDL_SetError("No displays available"); return -1; } return 0; } int WIN_GetDisplayBounds(_THIS, SDL_VideoDisplay * display, SDL_Rect * rect) { SDL_DisplayModeData *data = (SDL_DisplayModeData *) display->desktop_mode.driverdata; #ifdef _WIN32_WCE // WINCE: DEVMODE.dmPosition not found, or may be mingw32ce bug rect->x = 0; rect->y = 0; rect->w = display->windows->w; rect->h = display->windows->h; #else rect->x = (int)data->DeviceMode.dmPosition.x; rect->y = (int)data->DeviceMode.dmPosition.y; rect->w = data->DeviceMode.dmPelsWidth; rect->h = data->DeviceMode.dmPelsHeight; #endif return 0; } void WIN_GetDisplayModes(_THIS, SDL_VideoDisplay * display) { SDL_DisplayData *data = (SDL_DisplayData *) display->driverdata; DWORD i; SDL_DisplayMode mode; for (i = 0;; ++i) { if (!WIN_GetDisplayMode(data->DeviceName, i, &mode)) { break; } if (mode.format != SDL_PIXELFORMAT_UNKNOWN) { if (!SDL_AddDisplayMode(display, &mode)) { SDL_free(mode.driverdata); } } } } int WIN_SetDisplayMode(_THIS, SDL_VideoDisplay * display, SDL_DisplayMode * mode) { SDL_DisplayData *displaydata = (SDL_DisplayData *) display->driverdata; SDL_DisplayModeData *data = (SDL_DisplayModeData *) mode->driverdata; LONG status; #ifdef _WIN32_WCE /* TODO: implement correctly. On my Asus MyPAL, if I execute the code below I get DISP_CHANGE_BADFLAGS and the Titlebar of the fullscreen window stays visible ... (SDL_RaiseWindow() would fix that one) */ return 0; #endif status = ChangeDisplaySettingsEx(displaydata->DeviceName, &data->DeviceMode, NULL, CDS_FULLSCREEN, NULL); if (status == DISP_CHANGE_SUCCESSFUL) { return 0; } else { const char *reason = "Unknown reason"; switch (status) { case DISP_CHANGE_BADFLAGS: reason = "DISP_CHANGE_BADFLAGS"; break; case DISP_CHANGE_BADMODE: reason = "DISP_CHANGE_BADMODE"; break; case DISP_CHANGE_BADPARAM: reason = "DISP_CHANGE_BADPARAM"; break; case DISP_CHANGE_FAILED: reason = "DISP_CHANGE_FAILED"; break; } SDL_SetError("ChangeDisplaySettingsEx() failed: %s", reason); return -1; } } void WIN_QuitModes(_THIS) { ChangeDisplaySettingsEx(NULL, NULL, NULL, 0, NULL); } /* vi: set ts=4 sw=4 expandtab: */